Question
In a town, 30% of the population is ineligible to vote.
Among those eligible, 50% are women. If 2/5 of eligible men and 1/5 of eligible women voted, find the ratio of male to female voters who voted.Solution
ATQ,
Let the total population be '100n'
Eligible voters = 0.70 × 100n = '70n'
Eligible female voters = 0.50 × 70n = '35n'
Eligible male voters = 70n - 35n = '35n'
Males who voted = (2/5) × 35n = '14n'
Females who voted = (1/5) × 35n = '7n'
Required ratio = 14n : 7n = 2 : 1
Which option is incorrect for the component of ti.me series.
For a distribution, mean is 40, median is 40.5 and mode is 41. The distribution is:
Which one is not basis of classification of data.
The value of k so that following is probability mass function
X:           -2           -1           0  �...
A Poisson distribution has a double mode at x = 1 and x = 2. The probability for x = 1 or for x = 2 of these two values is:
For the price -quantity chart
the Laspeyres price in...
If the second and third moment about the origin are 8 and 18 and the third moment about mean is -14 , then the first moment about the origin is:
Two data sets of sizes 6 and 9 have standard deviation 3 and 4, respectively, and arithmetic means 4 and 4, respectively. The standard deviation of com...
The purchasing power of money is equal to: